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1. ### Find k For Quadratic Equation?

x^2 - kx + 4 = 0 apply the discriminant formula a = 1 , b = - k, c = 4 b^2 - 4ac = 0 (-k)^2 - 4(1)(4) = 0 k^2 - 16 = 0 k^2 = 16 k = √(16) k = 4 answer// x^2 - 4x + 4 = 0 (x - 2)(x - 2) = 0 x = 2

8 Answers · Science & Mathematics · 19/05/2019

2. ### does silver nitrate + sodium suphate = ? a precipitate?

... Group I elements (Li+, Na+, K+, Cs+, Rb+) are soluble . There are few exceptions...

1 Answers · Science & Mathematics · 26/05/2019

3. ### For which of the following types of ionic compounds are most examples insoluble in water? nitrates sulfates chlorides hydroxides?

... Group I elements (Li+, Na+, K+, Cs+, Rb+) are soluble . There are few exceptions...

1 Answers · Science & Mathematics · 05/06/2019

4. ### Developing ODE from data?

...atm is the atmospheric concentration, we would model this as: dC(t)/dt = -k*(C(t) - C_atm) where k is some positive rate constant. Note that the...

2 Answers · Science & Mathematics · 06/08/2019

5. ### Hyperbolas?

Rules (−k)^2/a^2 - (x-h)^2/b^2 = 1 , c = √(a^2+b^2) vertices (h , k+a) and (h , k-a) Foci (h , k + c) and (h , k - c) the asymptotes y - k = ±(a/b)(x-h)

1 Answers · Science & Mathematics · 13/05/2019

6. ### What's your favorite sport?

To watch it's professional football, but only when the K.C. Chiefs are playing.

13 Answers · Entertainment & Music · 08/11/2018

7. ### Find Foci and vertices of the ellipse I)9(x-3)^2+5(y+5)^2=45 2)9(x+4)^2+13(y-1)^2=117?

...and F(h+c, k) ii/ if b>a --->c = √( b^2 - a^2) then F(h , k-c) and F(h , k+c)

1 Answers · Science & Mathematics · 27/11/2018

8. ### Suppose 1 ≤ k ≤ n − 1 and gcd(k, n) = 1. Prove that gcd(n − k, n) = 1.?

...q is a positive integer and p < q) Therefore n - (n-k) = c(q-p) ... q-p becomes a positive integer k = c(q-p) So c is...

1 Answers · Science & Mathematics · 26/09/2018

9. ### Write the equation of an ellipse centered at the origin with foci at (0, -3) and (0, 3) and a major axis of 10.?

...k±a)  length of major axis = 2a  co-vertices (h±b,k)  foci (h,k±c), c² = a²-b² Apply your given information...

4 Answers · Science & Mathematics · 29/05/2019

10. ### Consider the reaction A+B⟶C+D. Is each of the following statements true or false?

... order...... FALSE. The reverse reaction is Rate = k[C][D] and is second order overall. 4) The activation energy for...

1 Answers · Science & Mathematics · 15/10/2018

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